A Study on Strength Characteristics of Expansive Soil-Flyash Mixes at Various Moulding Water Contents
P. V. V. Satyanarayana1, S. Hemanth Kumar2, P. Praveen3, B. V. Suresh Kumar4
1P.V.V. Satyanarayana, Professor, Department of Civil Engineering, Andhra University, Vishakhapatnam (Andhra Pradesh), India.
2S. Hemanth Kumar, Post Graduation Students, Department of Civil Engineering, Andhra University, Vishakhapatnam (Andhra Pradesh), India.
3P. Praveen, Department of Civil Engineering, Andhra University, Vishakhapatnam (Andhra Pradesh), India.
4B.V.Suresh Kumar, Department of Civil Engineering, Andhra University, Vishakhapatnam (Andhra Pradesh), India.
Manuscript received on 21 November 2013 | Revised Manuscript received on 28 November 2013 | Manuscript published on 30 November 2013 | PP: 145-149 | Volume-2 Issue-5, November 2013 | Retrieval Number: E0876112513/2013©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Road embankments, low lying areas require large quantities of soils for their construction. Structures like these located in expansive soil areas needs special attention for the use of local materials as construction materials. In this aspect use of stabilized materials needs special attention. Flyash is one such material can be mixed with expansive soils and used as Geotechnical material. In this an attempt is made for the utilization of Flyash in Bulk quantities by adding various percentages of Flyash to the expansive soils and verified their behaviour. Tests like compaction, UCS and CBR were performed on these mixes and identified that addition of Flyash increases the strength and decreases the swelling characteristics. From the test results it is also identified that high strength values were also obtained at plastic limits. An addition of 20-30% of Flyash needed to stabilize expansive soil are used as sub-grade and other construction materials in geotechnical applications.
Keywords: Expansive Soil, Flyash, Unconfined Compressive Strength, CBR.
Scope of the Article: Water Supply and Drainage